COMSEC IncidentCreated OnFebruary 12, 2018Last Updated OnFebruary 21, 2018Views4 You are here: KB Home Definitions Definitions C COMSEC Incident < BackOccurrence that potentially jeopardizes the security of COMSEC material or the secure electrical transmission of national security information or information governed by 10 U.S.C. Section 2315. SOURCE: CNSSI-4009